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S Microscopii

The visual band light curve of S Microscopii, from AAVSO data[1]
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Microscopium
Right ascension 21h 26m 44.1040s[2]
Declination −29° 51′ 04.680″[2]
Apparent magnitude (V) 7.8 - 14.8
Characteristics
Spectral type M3e-M5.5[3]
Astrometry
Parallax (π)0.5137 ± 0.1623 mas[4]
Distanceapprox. 6,000 ly
(approx. 1,900 pc)
Other designations
S Microscopii, CD−30° 18609, HD 204045
Database references
SIMBADdata

S Microscopii is a star in the constellation Microscopium. It is a red giant star of spectral type M3e-M5.5 that is also a Mira variable, with an apparent magnitude ranging between 7.4 and 14.8 over 210 days.[3] The Astronomical Society of Southern Africa in 2003 reported that observations of S Microscopii were very urgently needed as data on its light curve was incomplete.[5]

References

  1. ^ "Download Data". aavso.org. AAVSO. Retrieved 1 October 2021.
  2. ^ a b "V* S Mic". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 20 March 2015.
  3. ^ a b Otero, Sebastian Alberto (12 April 2011). "S Microscopii". AAVSO Website. American Association of Variable Star Observers. Retrieved 20 March 2015.
  4. ^ Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  5. ^ Cooper, Tim (2003). "Presidential address: Amateur Observations - Successes and Opportunities". Monthly Notes of the Astronomical Society of Southern Africa. 62: 234–40. Bibcode:2003MNSSA..62..234C.


source: https://en.wikipedia.org/wiki/S_Microscopii